Re: [PATCH] NFS regression in 2.6.26?, "task blocked for more than120 seconds"

From: Ian Campbell
Date: Tue Nov 04 2008 - 14:10:44 EST

Next message: Török Edwin: "Re: [PATCH] Identify which executable object the userspace addressbelongs to. Store thread group leader id, and use it to lookup the addressin the process's map. We could have looked up the address on thread's map,but the thread might not exist by the time we are called. The process mightnot exist either, but if you are reading trace_pipe, that is unlikely."
Previous message: Christoph Hellwig: "Re: [PATCH] Identify which executable object the userspace addressbelongs to. Store thread group leader id, and use it to lookup theaddress in the process's map. We could have looked up the addresson thread's map, but the thread might not exist by the time we arecalled. The process might not exist either, but if you are readingtrace_pipe, that is unlikely."
In reply to: kenneth johansson: "Re: [PATCH] NFS regression in 2.6.26?, "task blocked for more than120 seconds""
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On Sat, 2008-11-01 at 09:41 -0400, Trond Myklebust wrote:
> On Sat, 2008-11-01 at 11:45 +0000, Ian Campbell wrote:
> > On Mon, 2008-10-20 at 07:27 +0100, Ian Campbell wrote:
> > > So far I have bisected down to this range and am currently testing
> > > acee478 which has been up for >4days.
> >
> > Another update. It has now bisected down to a small range
> >
> > 7272dcd31d56580dee7693c21e369fd167e137fe SUNRPC: xprt_autoclose() should not call xprt_disconnect()
> > e06799f958bf7f9f8fae15f0c6f519953fb0257c SUNRPC: Use shutdown() instead of close() when disconnecting a TCP socket
> > ef80367071dce7d2533e79ae8f3c84ec42708dc8 SUNRPC: TCP clear XPRT_CLOSE_WAIT when the socket is closed for writes
> > 3b948ae5be5e22532584113e2e02029519bbad8f SUNRPC: Allow the client to detect if the TCP connection is closed
> > 67a391d72ca7efb387c30ec761a487e50a3ff085 SUNRPC: Fix TCP rebinding logic
> > 66af1e558538137080615e7ad6d1f2f80862de01 SUNRPC: Fix a race in xs_tcp_state_change()
> >
> > I'm currently testing 3b948ae5be5e22532584113e2e02029519bbad8f.
> >
> > 7272dcd31d56580dee7693c21e369fd167e137fe repro'd in half a day while
> > ef818a28fac9bd214e676986d8301db0582b92a9 (parent of
> > 66af1e558538137080615e7ad6d1f2f80862de01) survived for 7 days.
> >
> > Ian.
>
> Have you tested with the TCP RST fix yet? It has been merged into
> mainline, so it should be in the latest 2.6.28-git, but I've attached it
> so you can apply it to your test kernel...

I cherry picked 2a9e1cfa23fb62da37739af81127dab5af095d99 onto v2.6.25
and unfortunately it has not fixed the issue. I'll go back to bisecting
with 3b948ae5be5e22532584113e2e02029519bbad8f.

Ian.

>
> Cheers
> Trond
>
--
Ian Campbell

Superior ability breeds superior ambition.
-- Spock, "Space Seed", stardate 3141.9

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